Enos Uncoupling
Enos Uncoupling - Related Videos
10:03
Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
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Cited by 7 •
2018
Here, we present an experimental method for decoupling the interdependent Coriolis-force and rotating-buoyancy effects on full-field heat transfer distributions of a rotating channel.
08:58
En Face Detection of Nitric Oxide and Superoxide in Endothelial Layer of Intact Arteries
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Cited by 10 •
2016
In this article we describe an adapted relatively easy method using the fluorescence dye diaminofluorescein-2 diacetate (DAF-2DA) and dihydroethidium (DHE) for en face simultaneous detection and visualization of intracellular nitric oxide (NO) and superoxide anion (O2.−) respectively, in freshly isolated intact aortas of an obesity mouse model.
09:53
Specific Marking of HIV-1 Positive Cells using a Rev-dependent Lentiviral Vector Expressing the Green Fluorescent Protein
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2010
We have developed a lentiviral vector that possesses, in addition to the Tat-responsive LTR, the Rev-response element (RRE) that can regulate reporter gene expression in an HIV-1 Tat- and Rev-dependent fashion. The vector permits the specific detection of replicating HIV in living cells via the expression of GFP.
13:21
Detection of Nitric Oxide and Superoxide Radical Anion by Electron Paramagnetic Resonance Spectroscopy from Cells using Spin Traps
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Cited by 40 •
2012
Electron paramagnetic resonance (EPR) spectroscopy was employed to detect nitric oxide from bovine aortic endothelial cells and superoxide radical anion from human neutrophils using iron (II)-N-methyl-D-glucamine dithiocarbamate, Fe(MGD)2 and 5,5-dimethyl-1-pyroroline-N-oxide, DMPO, respectively.
05:47
Oxygen Flux Measurements to Evaluate Mitochondrial Respiration in Living and Permeabilized Cells
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2026
Source: Elettra Leo1, Luiza H.D. Cardoso1, Sabine Schmitt1, Erich Gnaiger11Oroboros InstrumentsThis video explains how oxygen flux is used to assess mitochondrial respiration in living and permeabilized mammalian cells. It demonstrates the sequential use of digitonin, metabolic substrates, ADP, an uncoupler, and an inhibitor to characterize different respiratory states. The resulting oxygen flux profile reveals mitochondrial function and energy-coupling efficiency under defined conditions.
FAQs
BH4 supports the normal eNOS reaction that generates nitric oxide. Oxidative stress can oxidize or deplete this cofactor, disrupting electron use within the enzyme and favoring superoxide formation. Examining BH4 status therefore helps researchers distinguish a cofactor-related mechanism from other contributors to reduced nitric oxide signaling and endothelial dysfunction.
L-arginine is a required substrate for nitric oxide production by eNOS. When its availability is limited, the reaction may become disrupted, allowing electron leakage and increasing superoxide generation rather than supporting nitric oxide formation. This makes substrate availability an important variable when interpreting how endothelial signaling becomes impaired.
Excess superoxide indicates that eNOS-derived reactive oxygen species have increased while nitric oxide availability has fallen. That shift can impair vascular signaling and contribute to endothelial dysfunction. Measuring or interpreting both sides of this imbalance is important because a reduction in nitric oxide alone would not fully describe the oxidative component of the process.
Researchers can examine whether oxidative stress, BH4 oxidation or depletion, and limited L-arginine coincide with impaired nitric oxide signaling and increased reactive oxygen species. Considering these factors together helps connect an altered eNOS reaction with vascular dysfunction, rather than treating endothelial impairment as an isolated loss of nitric oxide.
The mechanism is relevant to hypertension, atherosclerosis, diabetes, and other cardiovascular disorders because each can involve impaired endothelial function. Studying eNOS uncoupling provides a way to investigate how oxidative stress and reduced nitric oxide bioavailability may contribute to vascular abnormalities across different disease contexts.
Research on this process can inform antioxidant, BH4-supporting, and vascular-protective strategies. These approaches are relevant because the mechanism includes oxidative stress, loss or oxidation of BH4, and reduced nitric oxide availability. Their value is evaluated in relation to restoring healthier vascular signaling and limiting endothelial dysfunction.